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System Requirements
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Memory
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Memory requirements for running an ownCloud server are greatly variable, 
depending on the numbers of users and files, and volume of server activity. 
ownCloud needs a minimum of 128MB RAM, and we recommend a minimum of 512MB.

Recommended Setup for Running ownCloud
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For best performance, stability, support, and full functionality we recommend:

* Red Hat Enterprise Linux 7
* MySQL/MariaDB
* PHP 5.4 +
* Apache 2.4

Supported Platforms
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* Server: Linux (Debian 7, SUSE Linux Enterprise Server 11 SP3 & 12, 
  Red Hat Enterprise Linux/Centos 6.5 and 7 (7 is 64-bit only), Ubuntu 12.04 
  LTS, 14.04 LTS, 14.10)
* Web server: Apache 2  
* Databases: MySQL/MariaDB 5.x; Oracle 11g; PostgreSQL
* PHP 5.4 + required
* Hypervisors: Hyper-V, VMware ESX, Xen, KVM
* Desktop: Windows XP SP3 (EoL Q2 2015), Windows 7+, Mac OS X 10.7+ (64-bit 
  only), Linux (CentOS 6.5, 7 (7 is 64-bit only), Ubuntu 12.04 LTS, 14.04 LTS, 
  14.10, Fedora 20, 21, openSUSE 12.3, 13, Debian 7 & 8).
* Mobile apps: iOS 7+, Android 4+
* Web browser: IE8+ (except Compatibility Mode), Firefox 14+, Chrome 18+, 
  Safari 5+
